Reading desk deformation preventing structure

ABSTRACT

Provided is a reading desk deformation preventing structure, including: a reading desk; and a rectangular long bar-shaped quadrangular support bar having a bolt hole in each of both ends and of which the center is concavely curved, wherein the concave center portion of the quadrangular support bar is located behind the reading desk and a bolt is inserted into the bolt hole of the quadrangular support bar, and thus the center portion of the reading desk configured to receive a convexly curved force by the quadrangular support bar receives a force from a protruding portion of the quadrangular support bar which acts against warpage so that the reading desk neatly maintains a flat surface.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2018-0096005, filed on Aug. 17, 2018 and KoreanPatent Application No. 10-2019-0007034, filed on Jan. 18, 2019, thedisclosures both of which are incorporated herein by reference in itsentirety.

FIELD OF TECHNOLOGY

The following relates to a reading desk deformation preventingstructure, and more specifically, to a reading desk deformationpreventing structure configured to prevent deformation of a reading deskitself and solve a problem in which a gap is generated when a pedestalof the reading desk is rotatably coupled to prevent the pedestal fromshaking.

BACKGROUND

A pedestal structure capable of writing in a reading desk is disclosedin Korean Patent Application No. 10-1064182 invented by the inventor ofthe present invention.

As shown in FIG. 1, in an embodiment, a book-supporting reading desk 10formed to have a predetermined thickness and a lateral length greaterthan a longitudinal length and formed of wood or synthetic resin isconfigured so that one side of each of unfolding pieces 20 is coupled toeach of both lower sides of the book-supporting reading desk 10, bothsides of a book supporter 30 are inserted between the other sides of theunfolding pieces 20, that is, the one sides of the unfolding pieces 20exposed to upper surfaces of both lower sides of the book-supportingreading desk 10 or a front surface of the book-supporting reading desk10, and both sides of the book supporter 30 inserted between theunfolding pieces 20 are rotatably coupled by rotating pins.

Each of the unfolding pieces 20 is configured so that an unfolding hole21 through which the rotating pin passes is formed therein, and a head41 of the rotating pin can be engaged with the unfolding hole 21 whilethe rotating pin partially passes through the unfolding hole 21.

The unfolding hole 21 through which the rotating pin passes is formed sothat a lower portion of a vertical hole 23 is linked with an end of ahorizontal hole 22 and thus the rotating pin can rotate in forward andbackward directions or a lateral direction at an upper portion of thevertical hole 22 while moving along the horizontal hole 22 and thevertical hole 23.

Since the horizontal hole 22 is formed to have a length greater thanthat of the vertical hole 23 and pulls the book supporter 30 to maintaina state in which the book supporter 30 is further withdrawn in anoutward direction from a lower portion of the book-supporting readingdesk 10, the book-supporting reading desk 10 can be used in a state inwhich its breadth is extended to the extent of a length to which it iswithdrawn.

An engaging protrusion 24 is configured to have a plurality of throughholes formed in an upper portion thereof to be fixed to both lower sidesof the book-supporting reading desk 10 by screws 26.

Meanwhile, page turning prevention rods 31 are formed at both sides ofthe book supporter 30 to prevent pages from forcedly turning, and apedestal supporting member is coupled to the book supporter 30 tomaintain an inclined state of the book supporter 30.

However, in embodiments as shown in FIGS. 2 and 3, in a book-supportingreading desk 110 as described above, a book pedestal is bent inward bythe weight of a book when used with the book placed thereon and thus asingle page 200A or a thin stack of pages falls out when it is fittedtherein, and in the book-supporting reading desk 110, a phenomenonoccurs, in which a reading desk straight portion 202 in an initialmanufacturing stage becomes a reading desk curved portion 201 in a usedue to pressure from hands that is applied when the book-supportingreading desk 110 is used in front of a desk.

Numerals 112 and 130 which are not described above are a heightadjusting member and a pedestal part, respectively.

Further, in the related art, since the book supporter 30 rotates betweenthe unfolding pieces 20 at both sides, and the book supporter 30 towhich a bolt-shaped rotating pin 40 is fastened by the L-shapedunfolding holes 21 of the unfolding pieces 20 is erected or reclinedaccording to use by moving between the horizontal holes 22 and thevertical holes 23, in this case, a space is formed by surface distancesbetween positions of the horizontal holes 22, positions of ends of thevertical holes 23, and the book-supporting reading desk 10, the booksupporter 30 has a structure which rotates or is fixed in the space, andpositions of through holes 25 formed in the unfolding pieces 20 arefixed, and when the book supporter 30 is fastened to a side surface ofthe book-supporting reading desk 10 by the screws 26, the book supporter30 shakes according to a minute thickness of the book-supporting readingdesk 10 manually formed of wood and thus is difficult to fix.

In addition, since the book supporter 30 is fixed to the L-shapedunfolding holes 21 of the unfolding pieces 20 by a bolt-shaped rotatingpin 40, a separate process is added in assembly or when separation ofthe book supporter 30 is desired, a separate device for disassemblingthe book supporter 30 should be provided.

SUMMARY

An aspect relates to preventing deformation such as warpage or the likeof a reading desk itself to prevent paper sheets or the like frompassing through, and is directed to providing a fastening structurewhich does not have a rotation problem and shaking when fixed, byforming a fixing unit of a book supporter (30) to solve a problem thatthe book supporter (30) shakes according to a minute thickness of abook-supporting reading desk (10) manually formed of wood and thus isdifficult to fix.

Further, the following is directed to simply assembling components in ashape integrated with unfolding pieces (20) by removing cumbersomenessin which a bolt-shaped rotating pin (40) is separately engaged with abook supporter (30) at L-shaped unfolding holes (21) of the unfoldingpieces (20).

In addition, the following is directed to forming a quadrangular supportbar accommodation groove in a quadrangular shape in a back end sidesurface which is a back end surface of a second fixing body so that areading desk (110) is pushed in a forward direction while both lateralends of a quadrangular support bar are inserted into the quadrangularsupport bar accommodation groove to prevent warpage of the centerportion of the reading desk (110).

According to an aspect of embodiments of the invention, there isprovided a reading desk deformation preventing structure, including: areading desk (110); and a rectangular long bar-shaped quadrangularsupport bar (210) having a bolt hole (211) in each of both ends and ofwhich a center is concavely curved, wherein the concave center portionof the quadrangular support bar (210) is located behind the reading desk(110) and a bolt (212) is inserted into the bolt hole (211) of thequadrangular support bar (210), and thus a center portion of the readingdesk (110) receiving a convexly curved force by the quadrangular supportbar (210) receives a force from a protruding portion of the quadrangularsupport bar (210) which acts against warpage so that the reading desk(110) neatly maintains a flat surface.

Further, according to another aspect of embodiments of the invention,there is provided a reading desk deformation preventing structure,including: a reading desk (110); and a long bar-shaped ellipticalsupport bar (220) including an elliptical protruding part (225)configured to protrude in an elliptical shape from a center thereof, apedestal part (226) disposed on an edge of the elliptical protrudingpart (225), and a bolt hole (211) disposed in each of both ends of thepedestal part (226), and having a center slightly curved to be concaved,wherein the concave center portion of the elliptical support bar (220)is located behind the reading desk (110) a bolt (222) is inserted intoand connected to the bolt hole (221) of the elliptical support bar(220), and thus a center portion of the reading desk (110) configured toreceive a convexly curved force by the elliptical support bar (220)receives a force from a protruding portion of the elliptical support bar(220) which acts against warpage so that the reading desk (110) neatlymaintains a flat surface.

In addition, according to still another aspect of embodiments of theinvention, there is provided a reading desk deformation preventingstructure, including: a reading desk (110); and a long bar-shapedsupport bar (230) in a

shape including a reading desk lower pedestal part (235) configured tosupport a lower surface of the reading desk (110), a reading desk backlower pedestal part (236) configured to support a back surface of thereading desk (110), and a bolt hole (231) disposed in each of both endsof the reading desk back lower pedestal part (236), and having a centerslightly curved to be concaved, wherein the concave center portion ofthe

-shaped support bar (230) is located behind the reading desk (110), thereading desk lower pedestal part (235) and the reading desk back lowerpedestal part (236) support a lower end and the back surface of thereading desk (110), and a bolt (232) is inserted into the bolt hole(231) of the

-shaped support bar (230), and thus the center portion of the readingdesk (110) configured to receive a convexly curved force by the

-shaped support bar (230) receives a force from a protruding portion ofthe

-shaped support bar (230) which acts against warpage so that the readingdesk (110) neatly maintains a flat surface.

In addition, according to yet another aspect of embodiments of theinvention, there is provided a reading desk deformation preventingstructure, including: a reading desk (110); and a long bar-shapedquadrangular bar (240) including two spring accommodation parts (246)disposed in a center of a back surface thereof and a bolt hole (241)disposed in each of both ends thereof, and having a center slightlycurved to be concaved, wherein the concave center portion of thequadrangular support bar (240) is located behind the reading desk (110),springs (245) are located at the spring accommodation parts (246), and abolt (242) is inserted into and connected to the bolt hole (241) of thequadrangular support bar (240), and thus the center portion of thereading desk (110) configured to receive a convexly curved force by thequadrangular support bar (240) receives a force from a protrudingportion of the quadrangular support bar (240) which acts against warpageso that the reading desk (110) neatly maintains a flat surface.

According to yet another aspect of embodiments of the invention, thereis provided a reading desk deformation preventing structure, wherein aquadrangular support bar (310) is supported by a second fixing body(150) of a reading desk (110) behind the reading desk (110),quadrangular support bar accommodation grooves (320) are each formed ina quadrangular shape in a back end side surface (315) which is a backend surface of the second fixing body (150), the back end side surface(315) as a supporter coupling member (200) is coupled to a back lowerend of the reading desk (110) in a state in which both lateral ends ofthe quadrangular support bar (310) are inserted into the quadrangularsupport bar accommodation grooves (320), and thus the center portion ofthe reading desk (110) configured to receive a convexly curved force bythe quadrangular support bar (310) receives a force from a protrudingportion of the quadrangular support bar (310) which acts against warpageso that the reading desk (110) neatly maintains a flat surface.

Further, in embodiments of the invention, a portion in which the readingdesk is practically curved is a center portion which is roughly a halfof the reading desk, and thus a size ratio between the reading desk andthe support bar may be 4:3, which is a size ratio of the support barwhich covers the above

In addition, in embodiments of the invention, the pedestal (130) may becoupled by the supporter coupling member (200) at a lower portion of thereading desk (110); an insertion hole (132) may be formed in each ofinclined portions of ends of both edges of the pedestal part (130) intowhich a fitting part (131 a) formed at an end of a pressing body (131)is inserted; a first fixing body (140) may be formed, the first fixingbody (140) including a first coupling part (141) configured to protrudein a cylindrical shape coupled to the pedestal part (130), a firstpressing body fixing hole (142) formed as a round groove at the outside,a protruding part (145) formed as a quadrangular partition at apredetermined interval with respect to a second coupling part (146), anda first connection part (148) including the protruding part (145) on asurface thereof, wherein first connection part (148) and a firstsupporting part (149) are formed to be connected to each other in a

shape; a pair of supporter coupling members (200) may be configured, thepair of supporter coupling members (200) including a second fixing body(150) including a second supporting part (152) formed to have the samethickness as the reading desk (110) and having a partition (155)configured to surround a lower portion of an edge of the reading desk(110) and a second connection part (154) including a

-shaped coupling hole (156), wherein the second supporting part (152)and the second connection part (154) are formed to be connected to eachother in an L shape; the first coupling part (141) of the first fixingbody (140) of the supporter coupling member (200) may be inserted intothe insertion hole (132) of the pedestal part (130); the second couplingpart (146) of the first fixing body (140) may be inserted into thecoupling hole (156) of the second fixing body (150); and the fittingpart (131 a) of the pressing body (131) may be inserted into theinsertion hole (132) of the pedestal part (130).

In addition, in embodiments of the invention, the reading deskdeformation preventing structure may include a second pressing bodyfixing hole (143) located at a center portion of the first pressing bodyfixing hole (142) and formed through the first coupling part (141) and agroove (144 a) formed in an end of the first fixing body (140) in a Ushape to correspond to a shape of a supporting hole (133) of thepedestal part (130).

BRIEF DESCRIPTION

Some of the embodiments will be described in detail, with references tothe following Figures, wherein like designations denote like members,wherein:

FIG. 1 is a perspective view of a writable pedestal of a reading deskaccording to the related art;

FIG. 2 is a perspective view illustrating warpage of the writablepedestal of the reading desk according to the related art;

FIG. 3 is a perspective view of a state in which papers falls out due tothe warpage of the writable pedestal of the reading desk according tothe related art;

FIG. 4 is a rear view of a state in which a first embodiment of theinvention is installed on a back surface of a writable pedestal of areading desk according to embodiments of the invention;

FIG. 5 is a perspective view illustrating an effect of the state inwhich the first embodiment of the invention is installed on the backsurface of the writable pedestal of the reading desk according toembodiments of the invention;

FIG. 6a is a perspective view illustrating the first embodimentaccording to embodiments of the invention of the writable pedestal ofthe reading desk;

FIG. 6b is an exploded plan view, illustrating the first embodimentaccording to embodiments of the invention of the writable pedestal ofthe reading desk;

FIG. 6c is a coupled plan view, illustrating the first embodimentaccording to embodiments of the invention of the writable pedestal ofthe reading desk;

FIG. 7a is a perspective view, illustrating a second embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 7b is an exploded plan view illustrating a second embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 7c is a coupled plan view illustrating a second embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 8a is a perspective view, illustrating a third embodiment accordingto embodiments of the invention of a writable pedestal of a readingdesk;

FIG. 8b is an exploded plan view illustrating a third embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 8c is a coupled plan view illustrating a third embodiment accordingto embodiments of the invention of a writable pedestal of a readingdesk;

FIG. 9a is a perspective view, illustrating a fourth embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 9b is an exploded plan view illustrating a fourth embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 9c is a coupled plan view, illustrating a fourth embodimentaccording to embodiments of the invention of a writable pedestal of areading desk;

FIG. 10 is a perspective view illustrating a writable pedestal structureof the reading desk according to embodiments of the invention;

FIG. 11 is a perspective view illustrating a structure in which thereading desk of embodiments of the invention is separated;

FIG. 12 is an enlarged perspective view of a fastening structure of aseparated supporter of the reading desk of embodiments of the invention;

FIG. 13 is a perspective view illustrating a separated structure in thecase in which a pedestal part of the reading desk of embodiments of theinvention faces in an upward direction;

FIG. 14 is a perspective view illustrating a coupled structure in thecase in which the pedestal part of the reading desk of embodiments ofthe invention faces in a downward direction;

FIG. 15a is a cross-sectional view illustrating a fastening structure ofthe supporter in the case in which the pedestal part of the reading deskof embodiments of the invention faces parallel and a second couplingpart of the first fixing body is inserted into an upper portion of acoupling hole of a second fixing body;

FIG. 15b is a cross-sectional view illustrating the fastening structureof the supporter in the case in which the pedestal part of the readingdesk of embodiments of the invention faces parallel and the secondcoupling part of the first fixing body is inserted into lower portion ofthe coupling hole of the second fixing body;

FIG. 15c is a cross-sectional view illustrating the fastening structureof the supporter in the case in which the pedestal part of the readingdesk of embodiments of the invention faces parallel and the secondcoupling part of the first fixing body is inserted into the upperportion of the coupling hole of the second fixing body;

FIG. 15d is a cross-sectional view illustrating the fastening structureof the supporter in the case in which the pedestal part of the readingdesk of embodiments of the invention faces upward and the secondcoupling part of the first fixing body is inserted into the upperportion of the coupling hole of the second fixing body;

FIG. 15e is a cross-sectional view illustrating the fastening structureof the supporter in the case in which the pedestal part of the readingdesk of embodiments of the invention faces upward and the secondcoupling part of the first fixing body is inserted into the lowerportion of the coupling hole of the second fixing body;

FIG. 15f is a cross-sectional view illustrating the fastening structureof the supporter in the case in which the pedestal part of the readingdesk of embodiments of the invention faces parallel and the secondcoupling part of the first fixing body is inserted into the upperportion of the coupling hole of the second fixing body;

FIG. 15g is a cross-sectional view illustrating the fastening structureof the supporter in the case in which the pedestal part of the readingdesk of embodiments of the invention faces upward and the secondcoupling part of the first fixing body is inserted into the lowerportion of the coupling hole of the second fixing body;

FIG. 16 is a rear view of a state in which a fifth embodiment of theinvention is installed on a back surface of a writable pedestal of areading desk according to embodiments of the invention;

FIG. 17 is a perspective view illustrating a structure in which thereading desk of embodiments of the invention is separated;

FIG. 18 is a perspective view illustrating a structure in which thereading desk of embodiments of the invention is coupled; and

FIG. 19 is a perspective view of a second fixing body of a reading deskcoupling member of embodiments of the invention.

DETAILED DESCRIPTION

The embodiments of the invention may be transformed to various shapes,so a scope of embodiments of the invention should not be limited to thefollowing embodiments. The embodiments are provided to more completelydescribe the present disclosure to those skilled in the art.Accordingly, shapes of elements in the drawings are exaggerated for moreapparent descriptions.

Hereinafter, embodiments of the invention will be described in detailwith reference to the accompanying drawings.

FIG. 4 is a rear view of a state in which a first embodiment of theinvention is installed on a back surface of a writable pedestal of areading desk according to embodiments of the invention, FIG. 5 is aperspective view illustrating an effect of the state in which the firstembodiment of the invention is installed on the back surface of thewritable pedestal of the reading desk according to embodiments of theinvention, FIGS. 6a, 6b, and 6c are a perspective view, an exploded planview, and a coupled plan view, respectively, illustrating the firstembodiment according to the invention of the writable pedestal of thereading desk, FIGS. 7a, 7b, and 7c are a perspective view, an explodedplan view, and a coupled plan view, respectively, illustrating a secondembodiment according to embodiments of the invention of a writablepedestal of a reading desk, FIGS. 8a, 8b , and 8 c are a perspectiveview, an exploded plan view, and a coupled plan view, respectively,illustrating a third embodiment according to embodiments of theinvention of a writable pedestal of a reading desk, and FIGS. 9a, 9b,and 9c are a perspective view, an exploded plan view, and a coupled planview, respectively, illustrating a fourth embodiment according toembodiments of the invention of a writable pedestal of a reading desk.

Hereinafter, embodiments of the invention will be described in detailwith reference to FIGS. 4 to 6 c.

A reading desk deformation preventing structure includes a reading desk110 and a quadrangular support bar 210.

The reading desk 110 is a part configured to support a book, andincludes a supporting part configured to maintain the reading desk 110at a predetermined angle and a quadrangular support bar 210 on a backsurface thereof.

The quadrangular support bar 210 has a rectangular long bar shape ofwhich a center is slightly curved to be concaved and includes a bolthole 211 in each of both ends thereof.

In an installing method, the concave center portion of the quadrangularsupport bar 210 is located behind the reading desk 110, and thequadrangular support bar 210 is connected to the reading desk 110 byfitting bolts 212 into the bolt holes 211 of the quadrangular supportbar 210.

In a test, since a portion in which the reading desk may be practicallybent is a center portion which is roughly a half of the reading desk, anappropriate size ratio between the reading desk and the support bar wasfound to be 4 to 3, which is a size ratio of the support bar which maycover the above.

As described above, the center portion of the reading desk 110configured to receive a convexly curved force by the quadrangularsupport bar 210 which is installed as described above receives a forcefrom a protruding portion of the quadrangular support bar 210 which actsagainst warpage, and thus the reading desk 110 neatly maintains a flatsurface.

Accordingly, as shown in FIG. 5, when paper sheets or the like areplaced to be used on a bookshelf, the papers or the like do not fallout.

The quadrangular support bar 210 is formed of iron, wood, plastic, orthe like.

FIGS. 7a-7c is a second embodiment of a support bar according to theembodiments of the invention, and is a view illustrating a support barhaving an elliptical protruding part 225 on the center thereof.

The elliptical support bar 220 has a long bar shape of which the centeris slightly curved to be concaved, and includes the ellipticalprotruding part 225 configured to protrude in an elliptical shape at thecenter thereof, a pedestal part 226 disposed on an edge of theelliptical protruding part 225, and a bolt hole 211 disposed in each ofboth ends of the pedestal part 226, to increase the strength of thesupport bar against warpage.

In an installing method, the concave center portion of the ellipticalsupport bar 220 is located behind the reading desk 110, and theelliptical support bar 220 is connected to the reading desk 110 byfitting bolts 222 into the bolt holes 221 of the elliptical support bar220.

In a test, since a portion in which the reading desk may be practicallybent is the center portion which is roughly a half of the reading desk,an appropriate size ratio between the reading desk and the ellipticalsupport bar was found to be 4 to 3, which is a size ratio of the supportbar which may cover the above.

As described above, the center portion of the reading desk 110configured to receive a convexly curved force by the elliptical supportbar 220 which is installed as described above receives a force from aprotruding portion of the elliptical support bar 220 which acts againstwarpage, and thus the reading desk 110 neatly maintains a flat surface.

FIGS. 8a-8c is a third embodiment of a support bar according toembodiments of the invention, and is a view illustrating a

-shaped support bar 230.

The

-shaped support bar 230 has a long bar shape formed of a reading desklower pedestal part 235 and a reading desk back lower pedestal part 236,and of which the center is slightly curved to be concaved, and includesone bolt hole 231 in each of both ends of the reading desk back lowerpedestal part 236, to increase the strength of the support bar againstwarpage.

The reading desk back lower pedestal part 236 serves to support a backsurface of the reading desk 110, and the reading desk lower pedestalpart 235 serves to support a lower surface of the reading desk 110.

In an installing method, the concave center portion of the

-shaped support bar 230 is located behind the reading desk 110, thereading desk lower pedestal part 235 and the reading desk back lowerpedestal part 236 support a lower end and the back surface of thereading desk 110, and the

-shaped support bar 230 is connected to the reading desk 110 by fittingbolts 232 into the bolt holes 231 of the

-shaped support bar 230.

In a test, since a portion in which the reading desk may be practicallybent is the center portion which is roughly a half of the reading desk,an appropriate size ratio between the reading desk and the

-shaped support bar was found to be 4 to 3, which is a size ratio of thesupport bar which may cover the above.

As described above, the center portion of the reading desk 110configured to receive a convexly curved force by the

-shaped support bar 230 which is installed as described above receives aforce from a protruding portion of the

-shaped support bar 230 which acts against warpage, and thus the readingdesk 110 neatly maintains a flat surface.

FIGS. 9a-9c is a fourth embodiment of a support bar according toembodiments of the invention, and is a view illustrating a quadrangularbar 240 configured to prevent deformation of a reading desk using aspring.

The quadrangular support bar 240 has a long bar shape of which thecenter is slightly curved to be concaved, and includes two springaccommodation parts 246 at the center of a back surface thereof and onebolt hole 241 in each of both ends thereof to increase the strength ofthe support bar against warpage.

In an installing method, the concave center portion of the quadrangularsupport bar 240 is located behind the reading desk 110, springs 245 arelocated at the spring accommodation parts 246, and then the quadrangularsupport bar 240 is connected to the reading desk 110 by fitting bolts242 into the bolt holes 241 of the quadrangular support bar 240.

In a test, since a portion in which the reading desk may be practicallybent is the center portion which is roughly a half of the reading desk,an appropriate size ratio between the reading desk and the quadrangularbar was found to be 4 to 3, which is a size ratio of the support barwhich may cover the above.

As described above, the center portion of the reading desk 110configured to receive a convexly curved force by the quadrangular bar240 which is installed as described above receives a force from aprotruding portion of the quadrangular bar 240 which acts againstwarpage, and thus the reading desk 110 neatly maintains a flat surface.

FIG. 10 is a perspective view illustrating a writable pedestal structureof the reading desk according to embodiments of the invention, FIG. 11is a perspective view illustrating a structure in which the reading deskof embodiments of the invention is separated, FIG. 12 is an enlargedperspective view of a fastening structure of a separated supporter ofthe reading desk of embodiments of the invention, FIG. 13 is aperspective view illustrating a separated structure in the case in whicha pedestal part of the reading desk of embodiments of the inventionfaces in an upward direction, FIG. 14 is a perspective view illustratinga coupled structure in the case in which the pedestal part of thereading desk of embodiments of the invention faces in a downwarddirection, and FIG. 15 is a cross-sectional view illustrating afastening structure of the supporter in the case in which the pedestalpart of the reading desk of embodiments of the invention faces in upwardand downward directions.

In this case, in order to describe the embodiments of the invention,thicknesses of lines shown in the accompanying drawings, sizes of theelements, or the like may be exaggerated or omitted for clarity andconvenience of the descriptions, and terms provided according toreference numerals shown in the drawings are terms defined inconsideration of functions in embodiments of the invention, and may bechanged according to purposes or customs of a user or an operator.

As shown in FIGS. 10 to 14, schematically, components of a fasteningstructure of a supporter of the reading desk according to embodiments ofthe invention are formed of a reading desk 110, a pedestal part 130, anda supporter coupling member 200.

The above-described components will be described in detail.

The reading desk 110 is formed of wood having a predetermined size, andis formed to be coupled to a height adjusting member 112 disposed at anupper portion thereof and to a pedestal part 130 disposed at a lowerportion thereof at predetermined intervals through bolts or the like.

The height adjusting member 112 is formed to support a book having alarge height, and is manufactured to be classified into a heightadjusting bar 112 a of which a height is adjustable and a heightadjusting frame 112 b configured to support the height adjusting bar 112a, and the height adjusting frame 112 b is attached to the back surfaceof the reading desk 110 through the bolts or the like.

The pedestal part 130 is configured to support a book, formed of woodhaving a thickness enough to support the thickness of the book, andinclined at both ends of edge portions, and includes pressing bodies131, insertion holes 132, and a supporting hole 133.

The pedestal part 130 is formed to be foldable by the supporter couplingmembers 200 and thus a volume of the pedestal part 130 is decreased whenthe pedestal part 130 is kept or transported.

The pressing body 131 includes a fitting part 131 a connected to thepedestal part 130 and formed on an end thereof, a coil spring 131 bconnected to the fitting part 131 a, a metal line part 131 c formed toextend from the coil spring 131 b and bent at a predetermined angle, anda pressing member 131 d connected to an end of the metal line part 131c.

The pressing body 131 has a restoring force due to elasticity of thecoil spring 131 b and supports the opened book so as not to be covered.

The insertion holes 132 are holes formed to connect the reading desk 110and the pedestal part 130, formed in edge portions of both ends of thepedestal part 130, and inserted into the first fixing bodies 140 of thesupporter coupling members 200.

The supporting hole 133 is formed so that books and prints are stablylaid, and is formed long with a slight depth.

The supporter coupling member 200 is formed to be capable of connectingthe reading desk 110 and the pedestal part 130 and folding the pedestalpart 130, and includes the first fixing body 140 and a second fixingbody 150.

The first fixing body 140 of the supporter coupling member 200 has a

shape in which a first coupling part 141 and a first connection part 148are connected to each other, and a portion of the first fixing body 140is coupled to the second fixing body 150 and the other portion of thefirst fixing body 140 is coupled to the pedestal part 130 to serve toconnect the reading desk 110 and the pedestal part 130.

The first coupling part 141 is a part connected to the pedestal part130, and includes a first supporting part 149 configured to protrude ina cylindrical shape, a first pressing body fixing hole 142 and a secondpressing body fixing hole 143 configured to fix the pressing body 131,and an edge protecting piece 144.

The first coupling part 141 is formed to protrude from an inner side ofthe first supporting part 149, and fit-coupled to the insertion hole 132of the pedestal part 130.

The first pressing body fixing hole 142 is formed so that the coilspring 131 b of the pressing body 131 is seated thereon, and the firstpressing body fixing hole 142 is formed as a round groove 144 a at theoutside of the first supporting part 149.

The second pressing body fixing hole 143 is provided so that the fittingpart 131 a of the pressing body 131 is coupled thereto, and the secondpressing body fixing hole 143 is located at a center portion of thefirst pressing body fixing hole 142 and formed through the firstcoupling part 141.

The edge protecting piece 144 is formed at an end of the firstsupporting part 149 of the first fixing body 140, and includes theU-shaped groove 144 a to be smoothly connected to the supporting hole133 of the pedestal part 130 and a supporting hole 144 b connected fromthe groove 144 a to the first pressing body fixing hole 142.

The supporting hole 144 b serves to support prints and books with thesupporting hole 133 when the reading desk 110, the pedestal part 130,the first fixing bodies 140, the second fixing bodies 150 are coupled tobe a final reading desk.

The first connection part 148 includes a protruding part 145 and asecond coupling part 146 on an outer surface thereof.

The protruding part 145 prevents and protects the second coupling part146 from being broken due to impacts and folding of the plurality ofpedestal parts 130, and is formed as a partition at a predeterminedinterval with respect to the second coupling part 146.

The second coupling part 146 is fit-coupled to a coupling hole 156 ofthe second fixing body 150 to fold the pedestal part 130, and formed ina protruding cylindrical shape on which protrusions are formed.

The second fixing body 150 of the supporter coupling member 200 has an Lshape in which a second supporting part 152 and a second connection part154 are connected to each other, and a portion of the second fixing body150 is symmetrically coupled to a lower end of the book pedestal part130 in a lateral direction by bolts or the like and the other portion ofthe second fixing body 150 is connected to the first fixing body 140.

The second supporting part 152 is formed to have the same thickness asthe reading desk 110, includes a partition 155 configured to surroundthe second supporting part 152, and is coupled to the reading desk 110by the bolts or the like.

The partition 155 is formed to use a folding function of the pedestalpart 130 to prevent separation of the reading desk 110 from the secondfixing body 150.

The second connection part 154 includes a

-shaped coupling hole 156, and is formed so that the coupling hole 156is coupled to the second coupling part 146 of the first fixing body 140to easily fold the pedestal part 130.

An operation state of embodiments of the invention will be describedlater.

FIGS. 15a-15g is a cross-sectional view illustrating coupling of thefirst fixing body 140 and the second fixing body 150 of the supportercoupling member 200 when the pedestal part 130 is vertically folded.

The coupling and moving sequence of the first fixing body 140 and thesecond fixing body 150 when the pedestal part 130 is vertically foldedwill be described later.

FIG. 15a shows a state in which the first fixing body 140 and thepedestal part 130 face the outside in parallel, and shows a state inwhich the second coupling part 146 of the first fixing body 140 isinserted into an upper portion of the coupling hole 156 of the secondfixing body 150.

FIG. 15b shows a state in which the first fixing body 140 and thepedestal part 130 face the outside in parallel, and shows a state inwhich the second coupling part 146 of the first fixing body 140 isinserted into a lower portion of the coupling hole 156 of the secondfixing body 150.

FIG. 15c shows a state in which the first fixing body 140 and thepedestal part 130 face the outside in parallel, and shows a state inwhich the second coupling part 146 of the first fixing body 140 isinserted into the upper portion of the coupling hole 156 of the secondfixing body 150.

FIG. 15d shows a state in which the first fixing body 140 and thepedestal part 130 vertically face upward, and shows a state in which thesecond coupling part 146 of the first fixing body 140 is inserted intothe upper portion of the coupling hole 156 of the second fixing body150.

FIG. 15e shows a state in which the first fixing body 140 and thepedestal part 130 vertically face upward, and shows a state in which thesecond coupling part 146 of the first fixing body 140 is inserted intothe lower portion of the coupling hole 156 of the second fixing body150.

FIG. 15f shows a state in which the first fixing body 140 and thepedestal part 130 face the outside in parallel, and shows a state inwhich the second coupling part 146 of the first fixing body 140 isinserted into the upper portion of the coupling hole 156 of the secondfixing body 150.

FIG. 15g shows a state in which the first fixing body 140 and thepedestal part 130 vertically face upward, and shows a state in which thesecond coupling part 146 of the first fixing body 140 is inserted intothe lower portion of the coupling hole 156 of the second fixing body150.

The sequence of FIG. 15a to FIG. 15b is a view illustrating a case inwhich the pedestal part 130 stably spreads on the reading desk 110, andthe second coupling part 146 of the first fixing body 140 is insertedinto the lower portion of the coupling hole 156 of the second fixingbody 150 from the upper portion of the coupling hole 156 of the secondfixing body 150.

The sequence of FIG. 15b to FIG. 15e includes diagrams illustrating acase in which the pedestal part 130 and the first fixing body 140 arevertically folded toward the reading desk 110 in the upward directions,and the first fixing body 140 is vertically erected after the secondcoupling part 146 of the first fixing body 140 moves to the upperportion of the coupling hole 156 of the second fixing body 150 from thelower portion of the coupling hole 156 of the second fixing body 15, andthen the second coupling part 146 of the first fixing body 140 isinserted into the lower portion of the coupling hole 156 of the secondfixing body 150 from the upper portion of the coupling hole 156 of thesecond fixing body 150.

The sequence of FIG. 15e to FIG. 15g includes diagrams illustrating acase in which the pedestal part 130 and the first fixing body 140 at anupper sides are vertically folded toward the reading desk 110 indownward directions, and the first fixing body 140 is erected inparallel after the second coupling part 146 of the first fixing body 140moves to the upper portion of the coupling hole 156 of the second fixingbody 150 from the lower portion of the coupling hole 156 of the secondfixing body 15, and then the first fixing body 140 is erected toward ina downward direction and the second coupling part 146 of the firstfixing body 140 is inserted into the lower portion of the coupling hole156 of the second fixing body 150 from the upper portion of the couplinghole 156 of the second fixing body 150.

Accordingly, in an action effect, as shown in the drawings, the bookpedestal is operated in three directions.

That is, a book supporter is detachably coupled to the book pedestal tobe adjustable in three directions (a direction vertical to the bookpedestal capable of laying a book thereon, an upwardly tilting directionfor storage, and a downwardly tilting direction for use of a tablet).

In common, since the direction in FIG. 10 is a direction for laying andusing a book on the book supporter (using a book), the direction in FIG.13 is a direction in which the book pedestal tilts (for book storage),and the direction in FIG. 14 is a direction in which the book supportertilts in a downward direction to use a tablet (using a tablet), the bookpedestal should slightly be taken out through intermediate stages whenthe directions in FIGS. 10, 13, and 14 are used.

Accordingly, the book supporter is detachably coupled to the bookpedestal to be adjustable in the three directions (a direction verticalto the book pedestal capable of laying a book thereon, an upwardlytilting direction for storage, and a downwardly tilting direction foruse of a tablet).

A fifth embodiment of the invention will be described.

FIG. 16 is a rear view of a state in which a fifth embodiment of theinvention is installed on a back surface of a writable pedestal of areading desk according to embodiments of the invention, FIG. 17 is aperspective view illustrating a structure in which the reading desk ofembodiments of the invention is separated, FIG. 18 is a perspective viewillustrating a structure in which the reading desk of embodiments of theinvention is coupled, and FIG. 19 is a perspective view of a secondfixing body of a reading desk coupling member of embodiments of theinvention.

As shown in the drawings, a quadrangular support bar 310 is supported bysecond fixing bodies 150 of a reading desk 110 behind the reading desk110, quadrangular support bar accommodation grooves 320 are each formedin a quadrangular shape in a back end side surface 315 which is a backend surface of the second fixing body 150, and a back end side surface315 as a supporter coupling member 200 is coupled to a back lower end ofthe reading desk 110 in a state in which both lateral ends of thequadrangular support bar 310 are inserted into the quadrangular supportbar accommodation grooves 320.

The both lateral ends of the quadrangular support bar 310 are insertedinto the quadrangular support bar accommodation grooves 320 due to hardwarpage of the quadrangular support bar 310, and the quadrangularsupport bar 310 is pushed in a forward direction from the reading deskto prevent warpage of the center portion of the reading desk 110.

Further, in the supporter coupling member 200, a second supporting part152 and a second connection part 154 are coupled to each other in an Lshape, and a portion of the supporter coupling member 200 issymmetrically coupled to a lower end of a book pedestal part 130 in alateral direction by bolts or the like, and the other portion of thesupporter coupling member 200 is connected to a first fixing body 140.

The second supporting part 152 is formed to have the same thickness asthe reading desk 110, includes a partition 155 configured to surroundthe second supporting part 152, and is coupled to the reading desk 110by the bolts or the like.

The partition 155 is formed to use a folding function of the pedestalpart 130 to prevent separation of the reading desk 110 from the secondfixing body 150.

The second connection part 154 includes a

-shaped coupling hole 156, and is formed so that the coupling hole 156is coupled to the second coupling part 146 of the first fixing body 140to easily fold the pedestal part 130.

Accordingly, embodiments of the invention can prevent deformation of areading desk itself such as warpage or the like to prevent papers or thelike from falling out, and in embodiments of the invention, since afixing unit of a book supporter 30 is formed to be completely insertedin the same width such that the book supporter 30 does not shakeaccording to a minute thickness of a book-supporting reading desk 10manually formed of wood, a fastening structure which does not shake whenfixed can be provided.

Further, since a rotary shaft is integrally formed with the booksupporter 30 instead of a bolt-shaped rotating pin 40 in an L-shapedunfolding hole 21 of an unfolding piece 20, and a cover is fixed to thebook supporter by a pin through a through hole, direct assembly with theunfolding piece 20 is enabled and thus manufacturing can be simplified.

In addition, in embodiments of the invention, a quadrangular support baraccommodation groove is formed in a quadrangular shape in a back endside surface which is a back end surface of each of second fixing bodiesso that a reading desk is pushed in a forward direction with bothlateral ends of a quadrangular support bar inserted into thequadrangular support bar accommodation groove to prevent warpage of acenter portion of the reading desk and thus warpage can be prevented,and since the reading desk 110 is fit-coupled to the second fixingbodies at lateral sides, working efficiency can be doubled.

Although the invention has been illustrated and described in greaterdetail with reference to the preferred exemplary embodiment, theinvention is not limited to the examples disclosed, and furthervariations can be inferred by a person skilled in the art, withoutdeparting from the scope of protection of the invention.

For the sake of clarity, it is to be understood that the use of “a” or“an” throughout this application does not exclude a plurality, and“comprising” does not exclude other steps or elements.

What is claimed is:
 1. A reading desk deformation preventing structure,comprising: a reading desk; and a rectangular long bar-shapedquadrangular support bar having a bolt hole in each of both ends and ofwhich a center is concavely curved, wherein the concave center portionof the quadrangular support bar is located behind the reading desk and abolt is inserted into the bolt hole of the quadrangular support bar, andthus a center portion of the reading desk receiving a convexly curvedforce by the quadrangular support bar receives a force from a protrudingportion of the quadrangular support bar which acts against warpage sothat the reading desk neatly maintains a flat surface.
 2. A reading deskdeformation preventing structure, comprising: a reading desk; and a longbar-shaped elliptical support bar including an elliptical protrudingpart configured to protrude in an elliptical shape from a centerthereof, a pedestal part disposed on an edge of the ellipticalprotruding part, and a bolt hole disposed in each of both ends of thepedestal part, and having a center slightly curved to be concaved,wherein the concave center portion of the elliptical support bar islocated behind the reading desk a bolt is inserted into and connected tothe bolt hole of the elliptical support bar, and thus a center portionof the reading desk configured to receive a convexly curved force by theelliptical support bar receives a force from a protruding portion of theelliptical support bar which acts against warpage so that the readingdesk neatly maintains a flat surface.
 3. A reading desk deformationpreventing structure, comprising: a reading desk; and a long bar-shapedsupport bar in a

shape including a reading desk lower pedestal part configured to supporta lower surface of the reading desk, a reading desk back lower pedestalpart configured to support a back surface of the reading desk, and abolt hole disposed in each of both ends of the reading desk back lowerpedestal part, and having a center slightly curved to be concaved,wherein the concave center portion of the

-shaped support bar is located behind the reading desk, the reading desklower pedestal part and the reading desk back lower pedestal partsupport a lower end and the back surface of the reading desk, and a boltis inserted into the bolt hole of the

-shaped support bar, and thus the center portion of the reading deskconfigured to receive a convexly curved force by the

-shaped support bar receives a force from a protruding portion of the

-shaped support bar which acts against warpage so that the reading deskneatly maintains a flat surface.
 4. A reading desk deformationpreventing structure, comprising: a reading desk; and a long bar-shapedquadrangular bar including two spring accommodation parts disposed in acenter of a back surface thereof and a bolt hole disposed in each ofboth ends thereof, and having a center slightly curved to be concaved,wherein the concave center portion of the quadrangular support bar islocated behind the reading desk, springs are located at the springaccommodation parts, and a bolt is inserted into and connected to thebolt hole of the quadrangular support bar, and thus the center portionof the reading desk configured to receive a convexly curved force by thequadrangular support bar receives a force from a protruding portion ofthe quadrangular support bar which acts against warpage so that thereading desk neatly maintains a flat surface.
 5. A reading deskdeformation preventing structure, wherein a quadrangular support bar issupported by a second fixing body of a reading desk behind the readingdesk, quadrangular support bar accommodation grooves are each formed ina quadrangular shape in a back end side surface which is a back endsurface of the second fixing body, the back end side surface as asupporter coupling member is coupled to a back lower end of the readingdesk in a state in which both lateral ends of the quadrangular supportbar are inserted into the quadrangular support bar accommodationgrooves, and thus the center portion of the reading desk configured toreceive a convexly curved force by the quadrangular support bar receivesa force from a protruding portion of the quadrangular support bar whichacts against warpage so that the reading desk neatly maintains a flatsurface.
 6. The reading desk deformation preventing structure of claim1, wherein, a portion in which the reading desk is practically curved isa center portion which is roughly a half of the reading desk, and thus asize ratio between the reading desk and the support bar is 4:3, which isa size ratio of the support bar which covers the above.
 7. The readingdesk deformation preventing structure of claim 1, wherein: a pedestal iscoupled by the supporter coupling member at a lower portion of thereading desk; an insertion hole is formed in each of inclined portionsof ends of both edges of the pedestal part into which a fitting partformed at an end of a pressing body is inserted; a first fixing body isformed, the first fixing body including a first coupling part configuredto protrude in a cylindrical shape coupled to the pedestal, a firstpressing body fixing hole formed as a round groove at the outside, aprotruding part formed as a quadrangular partition at a predeterminedinterval with respect to a second coupling part, and a first connectionpart including the protruding part on a surface thereof, wherein firstconnection part and a first supporting part are formed to be connectedto each other in a

shape; a pair of supporter coupling members is configured, the pair ofsupporter coupling members including a second fixing body including asecond supporting part formed to have the same thickness as the readingdesk and having a partition configured to surround a lower portion of anedge of the reading desk and a second connection part including a

-shaped coupling hole, wherein the second supporting part and the secondconnection part are formed to be connected to each other in an L shape;the first coupling part of the first fixing body of the supportercoupling member is inserted into the insertion hole of the pedestal; thesecond coupling part of the first fixing body is inserted into thecoupling hole of the second fixing body; and the fitting part of thepressing body is inserted into the insertion hole of the pedestal. 8.The reading desk deformation preventing structure of claim 7, comprisinga second pressing body fixing hole located at a center portion of thefirst pressing body fixing hole and formed through the first couplingpart and a groove formed in an end of the first fixing body in a U shapeto correspond to a shape of a supporting hole of the pedestal.